Research field (3)：
Semiconductors, optical and atomic physics
, Optical engineering and photonics
, Particle, nuclear, cosmic-ray, and astrophysics - experiment
Research theme for competitive and other funds (3)：
2023 - 2026 量子エンタングル冷却原子を用いた量子重力探索
2020 - 2025 原子干渉計におけるデコヒーレンス時間の質量依存性の研究
2021 - 2024 同位体質量比と量子エレクトロニクス技術を駆使した量子重力探索
Papers (17)：
Naoya Ozawa, Keisuke Nakamura, Yasuhiro Sakemi. Conception, modelling, and characterization of a fiber amplifier with a simple and easy-to-repair configuration intended for the use in harsh environments. EPJ Techniques and Instrumentation. 2024
Keisuke Nakamura, Ken Kashiwagi, Sho Okubo, Hajime Inaba. Erbium-doped-fiber-based broad visible range frequency comb with a 30 GHz mode spacing for astronomical applications. Optics Express. 2023
K Nakamura, S Nagase, T Nakashita, T Hayamizu, T Aoki, H Nagahama, N Ozawa, M Sato, K Yamane, M Fukase, et al. Development of a Laser Frequency Stabilization and an Optical Transmission System for the Francium Electric Dipole Moment Search. Journal of Physics: Conference Series. 2022. 2249. 1. 012010-012010
Tomohiro Hayamizu, Hiromitsu Haba, Keisuke Nakamura, Takatoshi Aoki, Hiroki Nagahama, Kazuo Tanaka, Naoya Ozawa, Miki OHTSUKA, Yasuhiro Sakemi. Development of Ultracold Francium Atomic Sources Towards the Permanent EDM Search. Few-Body Systems. 2022. 63. 1
Keisuke Nakamura, Shintaro Nagase, Teruhito Nakashita, Tomohiro Hayamizu, Takatoshi Aoki, Hiroki Nagahama, Naoya Ozawa, Motoki Sato, Kazeki Yamane, Mirai Fukase, et al. 400-m-Long Polarization-Maintaining Fibers for Magneto-Optical Trapping of Francium Atoms. Proceedings of the 2022 Conference on Lasers and Electro-Optics Pacific Rim. 2022
小澤直也, 長濱弘季, 中村圭佑, 佐藤幹, 佐藤幹, 中下輝士, 中下輝士, 永瀬慎太郎, 上原大祐, 深瀬実来, et al. Development of a Fr cold atomic source aimed at a search for the permanent electric dipole moment. 日本物理学会講演概要集(CD-ROM). 2023. 78. 1
深瀬実来, 長濱弘季, 中村圭佑, 小澤直也, 佐藤幹, 佐藤幹, 中下輝士, 中下輝士, 永瀬慎太郎, 上原大祐, et al. Development of a Radio Frequency Dipole Mass Filter for the Francium Permanent Electric Dipole Moment Search. 日本物理学会講演概要集(CD-ROM). 2023. 78. 1
上原大祐, 長濱弘季, 中村圭佑, 佐藤幹, 佐藤幹, 中下輝士, 中下輝士, 小澤直也, 永瀬慎太郎, 深瀬実来, et al. Study of neutral desorption reactions on metal surface for realization of laser-cooled neutral francium source. 日本物理学会講演概要集(CD-ROM). 2023. 78. 1
青木貴稔, 佐藤拓海, 池田英彦, 岡本直大, 鳥井寿夫, 中村圭佑, 永瀬慎太郎, 長濱弘季, 小澤直也, 佐藤幹, et al. Quantum sensing of the electron electric dipole moment using quantum entangled Fr atoms. 電気学会研究会資料(Web). 2022. ECT-22-040-044
永瀬慎太郎, 長濱弘季, 中村圭佑, 早水友洋, 青木貴稔, 小澤直也, 佐藤幹, 中下輝士, 山根風樹, 深瀬実来, et al. Development of the Francium source with laser cooling technique for the atomic electric dipole moment search. 日本物理学会講演概要集(CD-ROM). 2022. 77. 1
